400%
200%
100%
75%
50%
25%
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
08.a. (Handout)
8. a.. CHandaccf) 2010 Annual NPDES Report Board Meeting January 20, 2011 Margaret P. Orr, RE Central Contra Costa SanitarV District 2010 NPDES Annual Report ➢ Total flow treated ➢ Average daily flow ➢ Average dry weather flow ➢ Peak hourly flow ➢ Ash disposal 14.8 billion gallons vs. 14.1 in 2009 40.6 million gallons vs. 38.6 in 2009 = 36.9 million gallons (was 32.5 in 2009) 105 million gallons per day 3,900 tons (wet weight) (for soil amendment) which is the same for 2009. 6w1) 0a I r Treatment Plant ➢ Completed over 15,000 analytical tests ➢ Approximately 11,000 hours of laboratory work ➢ 100 percent compliance with NPDES Permit requirements ➢ NACWA Platinum Award 13th Year! Event Near Permit Limit ➢ Effluent Copper Concentration 12 ug/L November ➢ Permit is 14 ug/L - Monthly Average ➢ QA /QC Review 2 Effluent BOD Concentration ntglL Annual Average 30 25 Monthly Average Limit 25 nWL 20 J a 1s E 10 5 0 2001 2002 2003 2004 2005 2008 2007 2008 2009 2010 Year Effluent TSS Concentration nlglL Annual Average 35 30 Monthly Average Lima 30 melt 25 J 20 a E 15 10 5 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Year Influent Mercury Concentration 11 10 - — - — - — - — - — - — - g — _ — _ — _ — _ _ _ — _ _ _ — _ — _ 9 _ _ — _ — _ _ _ — _ — _ — _ _ _ — Je _ _ — _ _ _ _ _ _ — _ _ _ — _ — _ a y _ _ — _ _ _ — _ _ — _ — _ 3 _ _ — _ _ — _ _ _ _ _ _ _ 2 — - — - - 0 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009 Year .vay.¢iw.a1 ..ea�imo �w.r w= Effluent Mercury Concentration 05 0<5 0, ou 03 J a 925 02 015 01 Om U Monthly Average Llmlt 0.068 ug/L 1991 1993 1995 1997 1999 2001 2003 2005 2001 2009 r Year �.1V6M R1.a . .v 8YfE 11rW �r ML. W., WI El Permit Renewal • Permit expires March 31, 2012 • Renewal Application September 30, 2011 • Dilution Study submitted December 2010 • Chronic Toxicity Testing April - July 2011 • Issues • Copper • Toxicity • Se • PCB • Nutrients 5